Fireproof electric meter box
By designing fire baffles and airbag structures in the meter box, the problem of weed flames entering the meter box through heat dissipation holes was solved, achieving the effect of protecting electrical components in a fire, and reducing the temperature through a water cooling system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- LETOSY TECH CO LTD
- Filing Date
- 2026-03-10
- Publication Date
- 2026-06-05
AI Technical Summary
When the meter box is used outdoors, burning weeds may enter the box through the ventilation holes, affecting the normal operation of electrical components.
A fireproof meter box was designed, which adopts a fire baffle and airbag structure. In the event of a fire, the airbag is driven to detach from the groove by a driving component, so that the fire baffle blocks the heat dissipation holes, and the temperature is reduced by a water storage tank and water flow system.
It effectively prevents flames from entering the meter box, reduces the possibility of fire, prolongs the time the meter box can withstand a fire, and lowers the temperature of the box through a water cooling system.
Smart Images
Figure CN122159074A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of meter boxes, and in particular to a fireproof meter box. Background Technology
[0002] A meter box is a closed or semi-closed enclosure specifically designed to install and protect electrical energy metering instruments (such as electricity meters, watt meters, etc.) and related switches and protective devices. It houses power distribution components such as meters, circuit breakers, and residual current devices in a metal or composite material enclosure, enabling accurate metering of electricity consumption in buildings or by users, as well as providing functions such as power distribution, monitoring, and alarms. Meter boxes are typically installed outdoors.
[0003] In related technologies, the meter box includes a box body and a box door. The box door is rotatably connected to the box body. The box body has a placement slot for placing electrical components and a heat dissipation hole that connects to the placement slot.
[0004] Some meter boxes are placed outdoors, where weeds may grow. These weeds may grow near the box. If the weeds catch fire accidentally, the airflow through the ventilation holes may cause the weeds to enter the ventilation holes, allowing flames to enter the storage compartment and affect the normal operation of the electrical components inside the box. Summary of the Invention
[0005] To address the issue that flames may enter the storage compartment through the heat dissipation holes, this application provides a fireproof meter box.
[0006] This application provides a fireproof meter box, which adopts the following technical solution: A fireproof meter box includes a box body with a placement slot and a heat dissipation hole communicating with the placement slot. A receiving slot communicating with the heat dissipation hole is also provided on the box body. A fire baffle is slidably connected within the receiving slot. A through hole is provided on the fire baffle. An airbag is provided within the receiving slot. A groove for inserting the airbag is provided on the fire baffle. A driving component is located within the receiving slot, used to drive the airbag out of the groove. When the airbag is in the groove, the through hole communicates with the heat dissipation hole. When the airbag is out of the groove, the fire baffle blocks the heat dissipation hole.
[0007] By adopting the above technical solution, when a fire occurs near the meter box, the driving component can drive the airbag to disengage from the groove, thereby releasing the airbag from limiting the fire baffle and allowing the fire baffle to slide within the receiving groove. In other words, the fire baffle can block the heat dissipation holes, making it difficult for flames in the air to directly enter the placement groove, allowing the meter box to withstand a fire for a longer time and reducing the possibility of fire inside the meter box.
[0008] Optionally, the side of the housing is provided with a water storage hole that connects to the receiving groove, the airbag forms a water storage groove, and the driving component is used to puncture the airbag.
[0009] By adopting the above technical solution, when it rains outside, rainwater can enter the receiving tank through the water storage hole, allowing the water storage tank in the airbag to store water. When the driving component punctures the airbag, the water in the airbag can flow out from the receiving tank, preventing the temperature of the fire baffle from getting too high and avoiding the adverse effects caused by the excessive temperature on the side of the box.
[0010] Optionally, the driving component includes a fusible metal strip, a puncture spring, and a puncture bar. The puncture spring is disposed in a receiving groove, and the puncture bar is disposed on the puncture spring. The puncture spring drives the puncture bar to puncture the airbag, and the fusible metal strip is used to restrict the movement of the puncture spring.
[0011] By adopting the above technical solution, when the outside is on fire, the fusible metal strip can be melted, so that the fusible metal strip will no longer block the piercing strip. The piercing spring drives the piercing strip to move towards the airbag, thereby enabling the piercing strip to pierce the airbag and allowing the water in the airbag's water tank to fall out.
[0012] Optionally, the fire baffle plate is provided with a water channel that connects to the receiving groove; when the airbag is disengaged from the groove, the water channel connects to the heat dissipation hole.
[0013] By adopting the above technical solution, water can flow along the extension direction of the water channel to reach the heat dissipation holes through the water channel connected to the receiving tank. In addition, the fire baffle can block the heat dissipation holes, so that water will not directly flow from the heat dissipation holes into the placement tank. The water can block the flames from damaging the fire baffle, and the water can further reduce the temperature of the side wall of the box, reducing the possibility of the side wall of the box being too hot.
[0014] Optionally, the heat dissipation hole includes a first part and a second part, the first part being located on the side of the second part closer to the placement slot, both the first part and the second part being inclined, and the distance between the first part and the second part gradually decreasing in the vertically downward direction.
[0015] By adopting the above technical solution, with both the first and second parts set at an angle, the distance between the first and second parts gradually decreases in the vertical downward direction, allowing water to remain in the heat dissipation holes, reducing the possibility of water flowing out through the openings of the heat dissipation holes, allowing the water to further limit the spread of the fire, and the water remaining at the heat dissipation holes can continuously reduce the temperature of the side wall of the box.
[0016] Optionally, multiple water channels are provided, and a flow channel communicating with the water channels is provided on the fire baffle plate. A float is slidably connected inside the water channel, and the receiving channel is connected to the first part. When the first part is filled with water, the float can block the opening of the water channel.
[0017] By adopting the above technical solution, when the first part is filled with water, the water can drive the float to slide in the water channel, so that the float can block the opening of the water channel near the flow channel, thereby preventing the water from continuing to flow from the water channel, allowing the water to continue to flow in other water channels, and realizing that the water can spread to different water channels.
[0018] Optionally, the airbag is provided with an extension that extends from the water storage hole and is used to transport water to the water storage tank.
[0019] By adopting the above technical solution, the extension extends from the water storage hole, allowing rainwater to enter the receiving tank through the extension as it falls, thus enabling the water storage tank to accumulate rainwater and allowing the airbag to quickly accumulate rainwater.
[0020] Optionally, the perforation wall is provided with a cutting strip, which is used to cut debris extending into the perforation.
[0021] By adopting the above technical solution, the debris inserted into the perforation is cut by the cutting strip, so that the fire baffle can slide smoothly in the receiving groove, thereby reducing the situation where the fire baffle cannot fall smoothly due to debris at the heat dissipation hole.
[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. When a fire occurs near the meter box, the driving component can drive the airbag to disengage from the groove, thereby releasing the airbag from its restriction on the fire baffle and allowing the fire baffle to slide within the receiving groove. In other words, the fire baffle can block the heat dissipation holes, making it difficult for flames in the air to directly enter the placement groove, allowing the meter box to withstand a fire for a longer time and reducing the possibility of fire inside the meter box.
[0023] 2. By tilting both the first and second parts, the distance between them gradually decreases in the vertical downward direction, allowing water to remain in the heat dissipation holes. This reduces the possibility of water flowing out through the openings of the heat dissipation holes, further limiting the spread of the fire. Furthermore, the water remaining at the heat dissipation holes allows it to continuously lower the temperature of the side walls of the enclosure. Attached Figure Description
[0024] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 It is along Figure 1 Sectional view of line AA in the middle; Figure 3 yes Figure 2 Enlarged schematic diagram of part B in the middle; Figure 4 This is a schematic diagram of the fire baffle plate in an embodiment of this application; Figure 5 It is along Figure 1 A partial sectional view of the CC line.
[0025] Reference numerals: 1. Box body; 11. Box door; 12. Placement slot; 13. Heat dissipation hole; 131. First part; 132. Second part; 2. Receiving slot; 21. Fire baffle; 211. Perforation; 212. Cutting strip; 213. Flow channel; 214. Water channel; 215. Float; 22. Airbag; 221. Water storage tank; 222. Water storage hole; 223. Extension part; 224. Protrusion; 225. Groove; 23. Drive slot; 231. Drive component; 232. Fusible metal strip; 233. Puncture spring; 234. Puncture strip. Detailed Implementation
[0026] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.
[0027] This embodiment discloses a fireproof electric meter box. (Refer to...) Figure 1 and Figure 2 A fireproof meter box includes a box body 1 and a door 11. The box body 1 has a placement slot 12 for placing electrical components. The door 11 is rotatably connected to the box body 1 and can block the opening of the placement slot 12.
[0028] Reference Figure 3 Multiple heat dissipation holes 13 are provided on the side of the housing 1, and the multiple heat dissipation holes 13 are arranged in an array along the height direction of the housing 1. The heat dissipation hole 13 includes a first part 131 and a second part 132, with the first part 131 located on the side of the second part 132 near the placement groove 12. The first part 131 and the second part 132 are inclined, and the distance between the first part 131 and the ground gradually decreases along the direction from the placement groove 12 to the heat dissipation hole 13, while the distance between the second part 132 and the ground gradually increases along the direction from the placement groove 12 to the heat dissipation hole 13. That is, the distance between the first part 131 and the second part 132 gradually decreases in the vertically downward direction.
[0029] Reference Figure 3A receiving groove 2 is provided on the side of the housing 1, extending along the height direction of the housing 1 and connecting multiple first parts 131. A fire baffle 21 is slidably connected inside the receiving groove 2, extending along the length direction of the receiving groove 2. Multiple perforations 211 are provided on the surface of the fire baffle 21, arranged in an array along the length direction of the fire baffle 21. Cutting strips 212 are provided on the walls of the perforations 211, extending along the width direction of the fire baffle 21. The cutting strips 212 can cut away debris at the perforations 211, preventing debris from entering the heat dissipation holes 13 and causing the fire baffle 21 to be unable to slide within the receiving groove 2.
[0030] Reference Figure 3 and Figure 4 A flow channel 213 is formed on the surface of the fire baffle 21 away from the placement groove 12, and the flow channel 213 is connected to the receiving groove 2. A water channel 214 extends along the length direction of the fire baffle 21. Multiple water channels 214 are formed on the surface of the fire baffle 21 away from the placement groove 12, and the water channels 214 extend along the width direction of the fire baffle 21, and multiple water holes are connected to the flow channel 213. A float 215 is slidably connected in the water channel 214. The float 215 can slide along the length direction of the fire baffle 21 and can float on the water surface. When the water spreads to the angle between the first part 131 and the second part 132, the float 215 floats with the water surface. At this time, the float 215 can block the opening of the water channel 214 so that water can enter the subsequent water channel 214.
[0031] Reference Figure 3 An air bladder 22 is provided inside the receiving tank 2, and the air bladder 22 forms a water storage tank 221. A water storage hole 222 communicating with the receiving tank 2 is opened on the side of the housing 1. An extension 223 is provided on the air bladder 22, and the extension 223 can extend out from the water storage hole 222. External rainwater can enter the receiving tank 2 along the extension 223, and the rainwater can be stored in the water storage tank 221.
[0032] Reference Figure 3 The airbag 22 is provided with a protrusion 224, and the surface of the fire baffle 21 is provided with a groove 225 for the protrusion 224 to be inserted. When the protrusion 224 is inserted into the groove 225, the fire baffle 21 is fixed in the receiving groove 2, and at this time the through hole 211 is aligned with the heat dissipation hole 13.
[0033] Reference Figure 4 and Figure 5 A drive groove 23 is provided on the wall of the receiving groove 2, and a drive component 231 is provided in the drive groove 23. The drive component 231 is used to puncture the airbag 22, so that the fire baffle 21 can move in the receiving groove 2, and allow the water in the water storage tank 221 to enter the flow groove 213.
[0034] Reference Figure 4 and Figure 5 The driving component 231 includes a fusible metal strip 232, a puncture spring 233, and a puncture bar 234. The puncture spring 233 is fixedly connected to the bottom wall of the driving groove 23, and the puncture bar 234 is fixedly connected to the surface of the puncture spring 233 away from the bottom wall of the driving groove 23. One side of the fusible metal strip 232 abuts against the groove wall of the receiving groove 2 away from the placement groove 12. The fusible metal strip 232 is located between the puncture bar 234 and the airbag 22. The material of the fusible metal strip 232 is a bismuth-based alloy. The fusible metal strip 232 will melt when it is exposed to a temperature of 70 degrees Celsius.
[0035] Reference Figure 4 When the outside is on fire, the temperature rises, and the fusible metal strip 232 is easily melted due to its contact with the wall of the receiving tank 2. This causes the piercing spring 233 to drive the piercing strip 234 to pierce the airbag 22, allowing the fire baffle 21 to fall smoothly; or the fire ignites the extension 223 of the airbag 22, allowing the fire baffle 21 to fall smoothly.
[0036] The implementation principle of a fireproof meter box in this application embodiment is as follows: When the outside is on fire, the temperature rises, and the fusible metal strip 232 is easily melted due to its contact with the wall of the receiving groove 2. This causes the piercing spring 233 to drive the piercing strip 234 to pierce the airbag 22, allowing the fire baffle 21 to fall smoothly. The fire baffle 21 can block the heat dissipation hole 13. Then, water can enter the heat dissipation hole 13 along the flow groove 213 and the water trough 214. As water accumulates, the float 215 floats in the water trough 214 until the float 215 can block the water trough 214, so that water can flow in the subsequent water storage tank 221.
[0037] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0038] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of this application should be included within the protection scope of this application.
Claims
1. A fireproof meter box, comprising a box body (1), wherein the box body (1) has a placement slot (12) and a heat dissipation hole (13) communicating with the placement slot (12), characterized in that: The housing (1) has a receiving groove (2) that connects to the heat dissipation hole (13). A fire baffle (21) is slidably connected in the receiving groove (2). A through hole (211) is provided in the fire baffle (21). An airbag (22) is provided in the receiving groove (2). A groove (225) for inserting the airbag (22) is provided in the fire baffle (21). A driving component (231) is provided in the receiving groove (2). The driving component (231) is used to drive the airbag (22) to disengage from the groove (225). When the airbag (22) is located in the groove (225), the through hole (211) connects to the heat dissipation hole (13). When the airbag (22) disengages from the groove (225), the fire baffle (21) blocks the heat dissipation hole (13).
2. The fireproof meter box according to claim 1, characterized in that: The side of the box (1) is provided with a water storage hole (222) that connects to the receiving groove (2), the airbag (22) forms a water storage groove (221), and the driving member (231) is used to puncture the airbag (22).
3. A fireproof meter box according to claim 2, characterized in that: The driving component (231) includes a fusible metal strip (232), a puncture spring (233), and a puncture bar (234). The puncture spring (233) is disposed in the receiving groove (2), and the puncture bar (234) is disposed on the puncture spring (233). The puncture spring (233) drives the puncture bar (234) to puncture the airbag (22). The fusible metal strip (232) is used to restrict the movement of the puncture spring (233).
4. A fireproof meter box according to claim 2, characterized in that: The fire baffle (21) is provided with a water channel (214) that connects to the receiving groove (2); when the airbag (22) is disengaged from the groove (225), the water channel (214) connects to the heat dissipation hole (13).
5. A fireproof meter box according to claim 4, characterized in that: The heat dissipation hole (13) includes a first part (131) and a second part (132). The first part (131) is located on the side of the second part (132) near the placement slot (12). Both the first part (131) and the second part (132) are inclined. The distance between the first part (131) and the second part (132) gradually decreases in the vertically downward direction.
6. A fireproof meter box according to claim 5, characterized in that: The water trough (214) has multiple openings, and the fire baffle plate (21) has a flow channel (213) that connects to the water trough (214). A float (215) is slidably connected inside the water trough (214), and the receiving tank (2) is connected to the first part (131). When the first part (131) is filled with water, the float (215) can block the opening of the water trough (214).
7. A fireproof meter box according to claim 2, characterized in that: The airbag (22) is provided with an extension (223) that extends from the water storage hole (222) and is used to transport water to the water storage tank (221).
8. A fireproof meter box according to claim 1, characterized in that: The perforation (211) has a cutting strip (212) on its wall, which is used to cut debris that extends into the perforation (211).